A length, in a lengthwise direction, of a sheet to be inspected by an inspection unit may be longer than a length of a conveyance path between a branch position corresponding to an initial branch path in a plurality of branch paths and a reading position of a reading apparatus. The sheet inspected by the inspection unit is not discharged to a stacking unit corresponding to the initial branch path, and is discharged to a stacking unit corresponding to a branch path branching from a main path at a branch position located further downstream than a branch position corresponding to the initial branch path.

A sheet feeding apparatus which is able to make it known that a first containing area for feeding cannot be replenished with sheets in a second containing area for replenishing. A sheet feeding cassette has the first containing area in which sheets to be fed are contained, the second containing area that is adjacent to the first containing area and in which sheets for replenishing are contained, and a sheet mover that transfers the sheets contained in the second containing area to the first containing area. A first detector detects whether or not the sheet mover is at a standby position. When the first detector detects that the sheet mover is not at the standby position, a warning is issued to prompt return of the sheet mover to the standby position.

In a paper feeding device, a paper feeding cassette and a multi-tray are disposed to be freely inserted or extracted separately, a hook is disposed in the paper feeding cassette, and an engagement part is disposed in the multi-tray. In a state in which the paper feeding cassette and the multi-tray are pushed into and housed on the inside of a device main body, when a lever is operated, and the hook is moved in an upward direction against a biasing force of a coil spring, the hook is engaged with the engagement part, and, in this state, when the paper feeding cassette is drawn out, the hook moves the engagement part, and the multi-tray is drawn out together with the paper feeding cassette.

In an image forming system, a hardware processor controls whether the first sheet is conveyed to an upstream side of the image former via a first conveying path which reverses sides of the first sheet or via a second conveying path which does not reverse the sides of the first sheet as well as the first conveying path, when images are formed on both sides of a plurality of the first sheets by the image former, in order to narrow a space between a plurality of the first sheets.

An image forming apparatus according to the present disclosure includes: one or more memories; and one or more processors functioning by executing instructions stored in the one or more memories as the following units: a chart output unit configured to output a test chart obtained by executing post-processing on a sheet; a display control unit configured to display a screen containing information indicating a measurement position related to a position of the post-processing on the test chart; a setting unit configured to accept setting up of adjustment related to the position of the post-processing on the screen; and an adjustment control unit configured to adjust the position of the post-processing based on the setting through the setting unit.

An image forming system includes: a transport device including a loop member that turns and that includes multiple grip units, the transport device transporting a medium that is gripped by the multiple grip units as the loop member turns; a formation device that forms an image on the medium that is transported by the transport device; and a processor configured to: cause the formation device to start image formation on a medium that is gripped by a specific grip unit of the multiple grip units in an association mode.

An image forming apparatus includes a display unit, an image forming unit, a detecting unit to detect whether a sheet is on the tray, a moving unit to cause the tray to ascend and to descend to a lower limit position per a tray sheet amount, and a determination unit to determine that tray descent is interrupted at a position located higher than the lower limit position. At the lower limit position, a screen prompting tray sheet removal is displayed. When the tray descent is interrupted, a screen is displayed to include a tray sheet removal prompt and a notice that an obstacle presents under the tray, an image forming process is stopped, and then the tray is caused to ascend when the sheets are not on the tray and then the image forming process is resumed, even if the obstacle presents under the tray.

In a printing system, an attached-time remaining sheet amount at detecting attachment of a sheet feed tray to the printing system is detected. And current remaining sheet amount at end of image printing is detected. Then, it is determined whether the attached-time sheet remaining amount is greater than a first threshold value. In response to determination that an attached-time sheet remaining amount is greater than a threshold value and the current remaining sheet amount is less than or equal to the threshold value, a controller executes an alert process corresponding to controlling a display to display an alert. In response to determination that the attached-time sheet remaining amount and the current remaining sheet amount are equal to or less than the first threshold value, the controller inhibits executing the alert process.

An image forming apparatus includes a display unit, an image forming unit, a detecting unit to detect whether a sheet is on the tray, a moving unit to cause the tray to ascend and to descend to a lower limit position per a tray sheet amount, and a determination unit to determine that tray descent is interrupted at a position located higher than the lower limit position. At the lower limit position, a screen prompting tray sheet removal is displayed. When the tray descent is interrupted, a screen is displayed to include a tray sheet removal prompt and a notice that an obstacle presents under the tray, an image forming process is stopped, and then the tray is caused to ascend when the sheets are not on the tray and then the image forming process is resumed, even if the obstacle presents under the tray.

In a monitoring system (1) for an apparatus (2) for producing and/or processing a material web (4), the monitoring system has at least one processor (10) and is equipped to perform a state and process monitoring step at the apparatus by detecting and synchronously visualizing signals, which can be generated by at least one first analysis device (5) for detecting tearing of the material web (4) in the apparatus (2) and by a number of further analysis devices (6a, 6b, 6c, 6d) for detecting physical measurement and influencing variables in the region of the apparatus.